^^^^Yeah, things like wearing flat shoes, leg drive, bar path, pushing yourself away from the bar, smaller warm up jumps with lesser reps, what accessory lifts correct what weakness , where to bring the bar down, maximizing arch etc,etc,etc, - Doug mastered much of what we take for granted today, he was a true trailblazer in the bench -wouldn't expect bodybuilders to knowabout that though lol........
I challenge you to Train with powerlifters for a week and learn just how much you likely don't know about technique.